According to
Our World, “It was decided to make an underwater city accessible to tourists. Special submarine height of 3.8 meters and a length of 23 meters with a capacity of 48 passengers, was built over six million U.S. dollars to bring everyone in the underwater kingdom.” The
proof-of-conceptarchimedes bridge, a submerged floating tunnel, was not finished and was “banned” to avoid damaging the “delicate undersea structures.” This image was captured in January 2011 as an underwater film crew tagged along with archaeologists to explore Qiandao Lake and the ancient Lion City.
Photo #5 by Chinese National Geography via Animal World